One of the problems that sometimes occur in gas allocation optimization is instability phenomenon. This phenomenon reduces the oil production and damages downhole and surface facilities. Different works have studied the stability and suggested some solutions to override it, but most of them (such as making the well intelligent) are very expensive and thus they are not applicable to many cases. ...

The virtual source method is a technique to image and monitor below a complex and time-varying overburden without the knowledge of overburden velocities and near-surface changes. It is based on extracting the response between a given pair of receivers by correlating the wavefields recorded by them and stacking over the physical sources. There are several challenges that arise while generating v...

As a submersible permanent magnet synchronous motor (SPMSM) must function in downhole high temperature crude oil for long periods of time, the accurate prediction its rise is crucial to improve stability motor. However, analysis field involves multiple physical fields, such as electric field, magnetic fluid and so on, it difficult calculate accurately. Motor loss usually loaded fixed value when...

This paper presents the numerical modelling and simulation of a 2D vertical well tubular model excited by coaxial radiofrequency transmission line placed in its annular space for purpose downhole RF energy transmission. The study identifies mechanism losses due to coupling between steel tubing casing using resonance mode analysis. design left-handed artificial power is proposed minimize right-h...

Abstract The negative pulsed downlink communication system is used to send surface control commands the downhole rotary steering tool at thousands of meters, which a significant part current technology. At present, transmission efficiency very low, and only simple can be transmitted in few minutes, limits development technology with complex functions. To improve rate system, pulse width needs s...